Nut-lock.



No. 68I,4I3. Patented Aug. 27, |90I.

J. F. FISHER.

HUT LDGK.

(Application tiled June 12. 1901.) (llo Model.)

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NTTED STATES PATENT OFFICE.

JACOB FRANCIS FISI-IER, OF NEW YORBK, N. Y.

NUT-LOCK;

SPECIFICATION forming part of Letters Patent No. 681,413, dated August 27, 1901.

Application filed June 12, 1901. Serial No. 64,238. (No model.)

To a/ZZ whom it may concern:

Beit known that I, JACOB FRANCIS FISHER, a citizen of the United States, residing at New York, in the county and State of New York, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specication.

' This invention relates to nut-locks; and it has for its object to provide an improved de` vice of this class which will be simple and inexpensive in construction, positive in operation, and generally superior in point of durability and efliciency.

. In the drawings, Figure 1 is a longitudinal sectional view of a bolt and nut applied to a piece of work and embodying my improvements. Fig. 2 is a detail transverse sectional View of the same, taken upon the line :c x, Fig. 1. Fig. 3 is a detail plan view of the same, two of the working parts being shown in detached position. Fig. 4 is a similar view showing a slightly varied arrangement of parts.

Corresponding parts in all the figures are denoted by the same reference characters.

Referring to the drawings, 1 designates my improved nut-lock, the several features of which are shown as embodied in a bolt 2 and a nut 3, which is applied to the bolt in the customary manner.

In carrying out my invention I provide a detachable locking device 4, which is carried by the nut 3 and which in operation is engaged in one of a plurality of longitudinal grooves or channels 5, formed longitudinally of the threaded surface portion 6 of the bolt. Means 7 are provided for maintaining the locking device 4 in operative position and preventing accidental displacement of the same.

In the preferred form of construction the locking device 4 consists of a pin 8, which is proportioned at its lower end 9 to tit each of the grooves 5 and is provided with a headed upper end 9. The pin 8 ts in a bore 10, which is formed transversely through the nut 3 from one face ll-of the same and is countersunk at its outer end, as at 12, to receive the head 9 of the pin. The face 11 of the nut is also channeled transversely, as at 13, to receive a flat plate 14, which fits above the head of the pin 8 and constitutes the means for maintaining the same'in operative posiin transverse dimension and tapers in width to receive the plate 14, which is similarly formed, in positive locking arrangement. By

tion. The channel 13 is preferably dovetailed I countersinking the upper end of the bore 10,

as above described, the head 9 of the pin 8 lies flush at its upper surface with the channeled face of the nut, and the plate 14 is thus readily adjusted into and out of position in the channeled face of the nut. 13 maybe formed laterally in the face of the nut, so that the plate 14 may be readily forced from the same, as shown in Fig. 4.

The operation and advantages of my improved nut-lock will be readily understood. The nut is screwed onto the bolt into the desired position and is properly adjusted to bring the bore 10 into registration with one of the grooves 5. The pin 8 is then slipped into the bore 10, and its lower end enters the groove 5 and locks the nut against rotation. The plate 14 is then iitted into the channel 13 and is wedged tightly therein, so as to prevent accidental displacement of the plate, and eonsequently'of'the pin 8. With the several parts so assembled the nut and bolt are firmly locked together against relative rotation.

The metal of the plate 14 may be hard, so as to enable its ready detachment from the nut, or it maybe of a soft nature, so that the plate may be forced into permanent association with the nut and the nut be permanently locked to the bolt.

lIn forming the grooves 5 a sufficient number of the same are provided to enable the pin 8 to be conveniently fitted into one of the same when the nut has been adjusted into proper position.

The entire device is simple in construction and positive in operation, and its use is not attended by any material addition of labor or expenditure of time.

I do not desire to be understood as limiting myself to the details of construction and arrangement as herein described and illustrated, as it is manifest that variations and modiiications may be made in the features of construction and arrangement in the adaptation of the device to various conditions of use without departing from the spirit and scope of my invention'and improvements. I therefore reserve the right to all such variai The channel tion and modification as properly falls Within the scope of my invention and theV terms of the following claims.

Having thus described my invention, I claim and desire to secure by Letters Patent= l. An improved nut-lock, comprising a detachable pin carried by the nut and projecting through a bore formed at one side of the same, the bolt being formed to receive the pin in locking engagement, and detachable means for locking the pin in operative posilion, said means consisting of a plate which is received in a transverse channel formed in one face ofthe nut.

2. An improved nut-lock, comprisinga pin which is carried by the nut and projects through a bore formed at one side of the same, the bore being countcrsunk at its upper end and said pin being provided with a head which fits in said countersunk upper end, the bolt being provided with a longitudinal groove which is formed to receive the pin in locking engagement, and detachable means for locking the pin in operative position, said means consisting of a wedge-shaped plate which is received in a transverse channel formed in one face of the nut.

3. An improved nut-look, comprising a pin which is carried by the nut and projects through a bore formed at one side of the same, the bore being countersunk at its upper end and said pin being provided with ahead Which fits in said countersunk upper end, the bolt being provided with a `longitudinal groove which is formed to receive the pin in locking engagement, and detachable means for locking the pin in operative position, said means consisting of a Wedge-shaped dovetailed plate which is received in a transverse similar chan'- nel formed at the same side of the nut as said bore and above the same.

4. An improved nut-lock, comprisinga detachable pin carried by the nut and projecting through a bore formed at one side of the nut, and detachable means for locking the pin in operative engagement With the bolt, said means consisting of a plate which is received in a transverse channel formed in one face of the nut.

In testimony whereof I have signed my name in the presence of the subscribing witnesses.

JACOB FRANCIS FISHER.

Vitnesses:

GEO. VAIL HUPPERTZ, J. R. LITTELL. 

